2 FreeRTOS V7.0.1 - Copyright (C) 2011 Real Time Engineers Ltd.
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5 ***************************************************************************
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7 * FreeRTOS tutorial books are available in pdf and paperback. *
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8 * Complete, revised, and edited pdf reference manuals are also *
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11 * Purchasing FreeRTOS documentation will not only help you, by *
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12 * ensuring you get running as quickly as possible and with an *
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13 * in-depth knowledge of how to use FreeRTOS, it will also help *
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14 * the FreeRTOS project to continue with its mission of providing *
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15 * professional grade, cross platform, de facto standard solutions *
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16 * for microcontrollers - completely free of charge! *
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18 * >>> See http://www.FreeRTOS.org/Documentation for details. <<< *
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20 * Thank you for using FreeRTOS, and thank you for your support! *
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22 ***************************************************************************
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25 This file is part of the FreeRTOS distribution.
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27 FreeRTOS is free software; you can redistribute it and/or modify it under
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28 the terms of the GNU General Public License (version 2) as published by the
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29 Free Software Foundation AND MODIFIED BY the FreeRTOS exception.
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30 >>>NOTE<<< The modification to the GPL is included to allow you to
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31 distribute a combined work that includes FreeRTOS without being obliged to
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32 provide the source code for proprietary components outside of the FreeRTOS
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33 kernel. FreeRTOS is distributed in the hope that it will be useful, but
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34 WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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35 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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36 more details. You should have received a copy of the GNU General Public
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37 License and the FreeRTOS license exception along with FreeRTOS; if not it
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38 can be viewed here: http://www.freertos.org/a00114.html and also obtained
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39 by writing to Richard Barry, contact details for whom are available on the
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44 http://www.FreeRTOS.org - Documentation, latest information, license and
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47 http://www.SafeRTOS.com - A version that is certified for use in safety
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50 http://www.OpenRTOS.com - Commercial support, development, porting,
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51 licensing and training services.
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54 /* Standard includes. */
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57 /* lwIP core includes */
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58 #include "lwip/opt.h"
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59 #include "lwip/sockets.h"
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61 /* FreeRTOS includes. */
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62 #include "FreeRTOS.h"
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65 /* Utils includes. */
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66 #include "CommandInterpreter.h"
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68 #define cmdMAX_INPUT_SIZE 20
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69 /*-----------------------------------------------------------*/
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71 void vBasicTelnetServer( void *pvParameters )
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73 long lSocket, lClientFd, lBytes, lAddrLen = sizeof( struct sockaddr_in );
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74 struct sockaddr_in sLocalAddr;
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75 struct sockaddr_in client_addr;
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76 const signed char *pcWelcomeMessage = "FreeRTOS command server - connection accepted.\r\nType Help to view a list of registered commands.\r\n\r\n>";
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77 const signed char *pcString;
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78 signed char cInChar, cInputIndex;
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79 signed char cInputString[ cmdMAX_INPUT_SIZE ];
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81 ( void ) pvParameters;
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83 lSocket = lwip_socket(AF_INET, SOCK_STREAM, 0);
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87 memset((char *)&sLocalAddr, 0, sizeof(sLocalAddr));
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88 sLocalAddr.sin_family = AF_INET;
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89 sLocalAddr.sin_len = sizeof(sLocalAddr);
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90 sLocalAddr.sin_addr.s_addr = htonl(INADDR_ANY);
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91 sLocalAddr.sin_port = ntohs( ( ( unsigned short ) 23 ) );
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93 if( lwip_bind( lSocket, ( struct sockaddr *) &sLocalAddr, sizeof( sLocalAddr ) ) < 0 )
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95 lwip_close( lSocket );
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96 vTaskDelete( NULL );
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99 if( lwip_listen( lSocket, 20 ) != 0 )
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101 lwip_close( lSocket );
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102 vTaskDelete( NULL );
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108 lClientFd = lwip_accept(lSocket, ( struct sockaddr * ) &client_addr, ( u32_t * ) &lAddrLen );
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110 if( lClientFd > 0L )
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112 lwip_send( lClientFd, pcWelcomeMessage, strlen( ( const char * ) pcWelcomeMessage ), 0 );
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115 memset( cInputString, 0x00, cmdMAX_INPUT_SIZE );
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119 lBytes = lwip_recv( lClientFd, &cInChar, sizeof( cInChar ), 0 );
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123 if( cInChar == '\n' )
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125 /* The input string has been terminated. Was the
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126 input a quit command? */
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127 if( strcmp( "quit", ( const char * ) cInputString ) == 0 )
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129 /* Set lBytes to 0 to close the connection. */
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134 /* The input string was not a quit command.
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135 Pass the string to the command interpreter. */
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136 while( ( pcString = pcProcessCommand( cInputString ) ) != NULL )
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138 /* A string has been generated by the
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139 command interpreter. Send it. */
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140 lwip_send( lClientFd, pcString, strlen( ( const char * ) pcString ), 0 );
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143 /* All the strings generated by the input
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144 command have been sent. Clear the input
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145 string ready to receive the next command. */
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147 memset( cInputString, 0x00, cmdMAX_INPUT_SIZE );
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148 lwip_send( lClientFd, "\r\n>", strlen( "\r\n>" ), 0 );
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153 if( cInChar == '\r' )
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155 /* Ignore the character. */
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157 else if( cInChar == '\b' )
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159 /* Backspace was pressed. Erase the last
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160 character in the string - if any. */
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161 if( cInputIndex > 0 )
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164 cInputString[ cInputIndex ] = '\0';
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169 /* A character was entered. Add it to the string
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170 entered so far. When a \n is entered the complete
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171 string will be passed to the command interpreter. */
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172 if( cInputIndex < cmdMAX_INPUT_SIZE )
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174 cInputString[ cInputIndex ] = cInChar;
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181 } while( lBytes > 0L );
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183 lwip_close( lClientFd );
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